Manufacture of construction material from coal ash - Nishikawa, J. et al. Jpn. Kokai Tokkyo Koho JP 2002 273, 394 (Cl. B09B3/00), 24 Sep 2002, Appl. 2001/85,386. (In Japanese) Hypostomus is a group of fish with numerical and struc-tural karyotypic variability. Among them, only six...